Abstract
Two flavones having very similar physical behaviour and spectral data have been isolated as minor constituents from the seeds of Tephrosia candida . Based upon a detailed and critical study of their mass spectra, extent of shifts in their UV spectra, X-ray diffraction studies, and preparation of their derivatives, the structures of these compounds have been established; one was found to be penduletin ( 1 ) and the other 5-hydroxy-2-(4-hydroxyphenyl)-3,6,8-trimethoxy-4H-1-benzopyran-4-one ( 2 ), for which the name candirone is proposed. To the best of our knowledge the latter is a new compound and this type of oxygenat on pattern is not known earlier among natural flavones.
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